74403666432 has 240 divisors, whose sum is σ = 226834553088. Its totient is φ = 23441080320.

The previous prime is 74403666397. The next prime is 74403666433. The reversal of 74403666432 is 23466630447.

It is a super-2 number, since 2×74403666432² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74403666433) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6136408 + ... + 6148520.

Almost surely, 2^74403666432 is an apocalyptic number.

74403666432 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74403666432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113417276544).

74403666432 is an abundant number, since it is smaller than the sum of its proper divisors (152430886656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74403666432 is a wasteful number, since it uses less digits than its factorization.

74403666432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12211 (or 12192 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 45.

The spelling of 74403666432 in words is "seventy-four billion, four hundred three million, six hundred sixty-six thousand, four hundred thirty-two".